Answer:
2 1/3 hours or 2 hours 20 minutes.
51.4 mph to 1 decimal place.
Step-by-step explanation:
Time = distance speed
First 50 miles time taken = 50 / 60 = 5/6 hours
Second 50 miles - time = 50/40 = 5/4 hours.
Final 20 miles - time taken = 20 / 80 = 1/4 hours.
Total time taken = 5/6 + 5/4 + 1/4
= 5/6 + 6/4
= 10/12 + 18/12
= 28/12
= 7/3 or 2 1/3 hours or 2 hours 20 minutes.
Average speed = total distance / total time
= 120 / 7/3
= 120 * 3/7
= 51.4 mph to 1 decimal place.
PEMDAS
Parenthesis, Exponents, Multiply, Divide, Add, Subtract
2(8)-2x4+1x5
16-8+5
16-13
3
Answer:
f(x)=5(-8)^3+1 = -2559
Step-by-step explanation:
f(-8) means x = -8
You just need to plug -8 into the function f(x) = 5x^3+1
(-8)^3=-512
5*-512=-2560
-2560+1 = -2559
Answer:
9 ounces
Step-by-step explanation:
He uses 3 ounces 3 different days. That is 3x3 which equals 9. Hope you get a 100! :)
